feat(skills): inspect + bridging skills, arbitrum/robinhood chain support

CLAUDE.md

@@ -497,7 +497,7 @@ The Cloudflare tunnel exposes the cluster to the public internet. Only x402-gate
 | `internal/enclave` | `enclave.go`, `enclave_darwin.go`, `enclave_stub.go` | Secure Enclave keys |
 | `internal/embed` | `embed.go` | Embedded assets (skills, infrastructure, networks) |
 
-**Embedded assets**: `internal/embed/infrastructure/` (K8s templates), `internal/embed/networks/` (ethereum, aztec), `internal/embed/skills/` (23 skills).
+**Embedded assets**: `internal/embed/infrastructure/` (K8s templates), `internal/embed/networks/` (ethereum, aztec), `internal/embed/skills/` (25 skills).
 
 **Tests**: `cmd/obol/sell_test.go` (CLI flags), `internal/x402/*_test.go` (verifier, config, matcher, E2E), `internal/erc8004/*_test.go` (ABI, client), `internal/embed/embed_crd_test.go` (CRD+RBAC validation), `internal/openclaw/integration_test.go` (full-cluster inference), `internal/openclaw/overlay_test.go`, `internal/inference/gateway_test.go`, `internal/serviceoffercontroller/*_test.go` (controller, render).
 

internal/embed/skills/addresses/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: addresses
-description: Verified contract addresses for major Ethereum protocols across mainnet and L2s. Use this instead of guessing. SKILL.md is an index — load the appropriate references/*.md file for the addresses you need. Start with references/obol-payments.md for the Stack's own rails (USDC + OBOL + Permit2 + ERC-8004 on the supported chains). Other categories include stablecoins, staking + Obol/Splits, DEXs, lending and DeFi, L2-native protocols, infrastructure (Safe, AA, Chainlink, EigenLayer, ENS, OpenSea), bridges (CCIP, Across), and major token addresses. Always verify on-chain via eth_getCode + eth_call before sending value.
+description: Verified contract addresses for major Ethereum protocols across mainnet and L2s. Use this instead of guessing. SKILL.md is an index — load the appropriate references/*.md file for the addresses you need. Start with references/obol-payments.md for the Stack's own rails (USDC + OBOL + Permit2 + ERC-8004 on the supported chains). Other categories include stablecoins, staking + Obol/Splits, DEXs, lending and DeFi, L2-native protocols, infrastructure (Safe, AA, Chainlink, EigenLayer, ENS, OpenSea), bridges (CCIP, Across, Arbitrum One + Robinhood Chain canonical), Robinhood Chain, and major token addresses. Always verify on-chain via eth_getCode + eth_call before sending value.
 ---
 
 # Contract Addresses
@@ -26,7 +26,8 @@ Open the file that matches the category you need:
 | [`references/defi.md`](references/defi.md) | Aave, Compound, MakerDAO/Sky, sDAI, Curve, Balancer, Yearn V3 |
 | [`references/l2-native.md`](references/l2-native.md) | Aerodrome (Base), Velodrome (OP), GMX, Pendle, Camelot, SyncSwap, Morpho |
 | [`references/infrastructure.md`](references/infrastructure.md) | Safe, ERC-4337 EntryPoint, Chainlink, EigenLayer, OpenSea Seaport, ENS, deterministic deployer |
-| [`references/bridges.md`](references/bridges.md) | Chainlink CCIP Router, Across SpokePool |
+| [`references/bridges.md`](references/bridges.md) | Chainlink CCIP Router, Across SpokePool, Arbitrum One + Robinhood Chain canonical bridges |
+| [`references/robinhood-chain.md`](references/robinhood-chain.md) | Robinhood Chain (4663) — chain metadata, canonical bridge L1+L2 contracts, tokens (bridged USDC, USDG, WETH), ecosystem notes |
 | [`references/agents-and-tokens.md`](references/agents-and-tokens.md) | ERC-8004 registries, major tokens (UNI, AAVE, COMP, MKR, LDO, WBTC, stETH, rETH) |
 
 ## Verify any address at runtime

internal/embed/skills/addresses/references/bridges.md

@@ -25,3 +25,47 @@ Cross-chain bridge. All SpokePool contracts are upgradeable proxies.
 | Optimism | `0x6f26Bf09B1C792e3228e5467807a900A503c0281` | ✅ Verified |
 
 Source: <https://docs.across.to/reference/contract-addresses>
+
+## Arbitrum One canonical bridge
+
+Lock-and-mint bridge between Ethereum L1 and Arbitrum One. Deposits
+~10-15 min (retryable tickets); withdrawals initiate on L2 → 7-day
+challenge window → claim on L1 (L1 gas required).
+
+**Last verified on-chain (`eth_getCode`): 2026-07-10.**
+
+| Contract | Chain | Address | Status |
+|----------|-------|---------|--------|
+| Delayed Inbox | Mainnet | `0x4Dbd4fc535Ac27206064B68FfCf827b0A60BAB3f` | ✅ Verified |
+| Sequencer Inbox | Mainnet | `0x1c479675ad559DC151F6Ec7ed3FbF8ceE79582B6` | ✅ Verified |
+| Bridge | Mainnet | `0x8315177aB297bA92A06054cE80a67Ed4DBd7ed3a` | ✅ Verified |
+| Outbox | Mainnet | `0x0B9857ae2D4A3DBe74ffE1d7DF045bb7F96E4840` | ✅ Verified |
+| Rollup (post-BoLD) | Mainnet | `0x4DCeB440657f21083db8aDd07665f8ddBe1DCfc0` | ✅ Verified |
+| L1 Gateway Router | Mainnet | `0x72Ce9c846789fdB6fC1f34aC4AD25Dd9ef7031ef` | ✅ Verified |
+| L1 ERC20 Gateway | Mainnet | `0xa3A7B6F88361F48403514059F1F16C8E78d60EeC` | ✅ Verified |
+| L2 Gateway Router | Arbitrum | `0x5288c571Fd7aD117beA99bF60FE0846C4E84F933` | ✅ Verified |
+
+Arbitrum One tokens (native USDC `0xaf88d065e77c8cC2239327C5EDb3A432268e5831`,
+WETH `0x82aF49447D8a07e3bd95BD0d56f35241523fBab1`) are in
+[`stablecoins.md`](stablecoins.md) — both re-verified 2026-07-10.
+
+Source: <https://docs.arbitrum.io/build-decentralized-apps/reference/contract-addresses>
+
+## Robinhood Chain canonical bridge
+
+Arbitrum-style bridge between Ethereum L1 and Robinhood Chain (chain ID
+4663). Deposits ~10 min (retryable tickets, failed deposits redeemable
+within 7 days); withdrawals initiate on L2 → 7-day challenge → claim on
+L1. Full L1 + L2 contract tables, tokens, and ecosystem notes:
+[`robinhood-chain.md`](robinhood-chain.md).
+
+Key L1 (Ethereum mainnet) addresses:
+
+| Contract | Address | Status |
+|----------|---------|--------|
+| Delayed Inbox | `0x1A07cc4BD17E0118BdB54D70990D2158AbAD7a2D` | ✅ Verified |
+| Outbox | `0xf0ce991ea4A0d2400A4AB49b20ae333f6Dce3DE9` | ✅ Verified |
+| L1 Gateway Router | `0x6a2E3a1e16FC29f27Ce61429746D558d656975bB` | ✅ Verified |
+| L1 ERC20 Gateway | `0x85001CC4867C5e1C22dA4B79BB8852B9e2a06da0` | ✅ Verified |
+
+Source: <https://docs.robinhood.com/chain/protocol-contracts>

internal/embed/skills/addresses/references/robinhood-chain.md

@@ -0,0 +1,83 @@
+# Robinhood Chain
+
+Robinhood's Arbitrum Nitro L2 (chain ID **4663**), settling to Ethereum
+L1. Consumer / tokenized-assets focus — most activity is "Robinhood
+Token" tokenized stocks (AAPL, TSLA, SPY, …) and meme tokens. Gas token
+is ETH.
+
+**Last verified on-chain (`eth_getCode`): 2026-07-10.**
+
+## Chain metadata
+
+| Item | Value |
+|------|-------|
+| Chain ID | `4663` |
+| RPC | `https://rpc.mainnet.chain.robinhood.com` |
+| Explorer | <https://robinhoodchain.blockscout.com> |
+| Gas token | ETH |
+| Stack | Arbitrum Nitro (canonical Arbitrum-style bridge, settles to Ethereum L1) |
+| Block time | ~100ms observed (avg over 100k recent blocks, 2026-07-10; Nitro mints blocks on demand) |
+| Deposits (L1→L2) | ~10 min via retryable tickets; failed deposits redeemable within 7 days |
+| Withdrawals (L2→L1) | Initiate on L2 → 7-day challenge window → claim on L1 (L1 gas required) |
+
+> ⚠️ **Bridged ERC-20 addresses on Robinhood Chain DIFFER from their
+> Ethereum addresses.** Never reuse an Ethereum token address here —
+> derive the L2 address via the L2 Gateway Router's
+> `calculateL2TokenAddress(l1Token)` or look it up on the explorer.
+
+## Ethereum L1 bridge contracts
+
+| Contract | Address | Status |
+|----------|---------|--------|
+| Rollup | `0x23A19d23e89166adedbDcB432518AB01e4272D94` | ✅ Verified |
+| Sequencer Inbox | `0xBd0D173EEb87D57A09521c24388a12789F33ba96` | ✅ Verified |
+| Delayed Inbox | `0x1A07cc4BD17E0118BdB54D70990D2158AbAD7a2D` | ✅ Verified |
+| Bridge | `0xDf8755334ce7A73cCF6b581C02eA649AE3E864b3` | ✅ Verified |
+| Outbox | `0xf0ce991ea4A0d2400A4AB49b20ae333f6Dce3DE9` | ✅ Verified |
+| L1 Gateway Router | `0x6a2E3a1e16FC29f27Ce61429746D558d656975bB` | ✅ Verified |
+| L1 ERC20 Gateway | `0x85001CC4867C5e1C22dA4B79BB8852B9e2a06da0` | ✅ Verified |
+| L1 Custom Gateway | `0x9368EAEbFe6E063C69dcF8126711A6997E0eCeE1` | ✅ Verified |
+| L1 WETH Gateway | `0xF7e12b9614b509C747ab4423bC4ACF923759Cf1B` | ✅ Verified |
+
+## Robinhood Chain L2 contracts
+
+| Contract | Address | Status |
+|----------|---------|--------|
+| L2 Gateway Router | `0x1E324B9316138CA9a73F960213621AD1aaf01B89` | ✅ Verified |
+| L2 ERC20 Gateway | `0xfd9b17206278C16DdaacF6AC8f05dBf97EdCb31e` | ✅ Verified |
+| L2 Custom Gateway | `0x912285144fC0f6e89d3Ed16F5Ab72f87A1878959` | ✅ Verified |
+| L2 WETH Gateway | `0x1D187C3E2dA52D72BC9C41e3AbA0fdFa6a7bF055` | ✅ Verified |
+| L2 Multicall | `0x2cAC2D899eCC914d704FeaAE33ac1bF36277DaD1` | ✅ Verified |
+
+Standard Arbitrum precompiles live at `0x64`–`0x72` (ArbSys =
+`0x0000000000000000000000000000000000000064`, etc.). `eth_getCode` on
+precompiles returns the stub byte `0xfe` — that is expected, not a
+missing contract.
+
+## Tokens
+
+| Token | Address | Status | Notes |
+|-------|---------|--------|-------|
+| WETH | `0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73` | ✅ Verified | Canonical bridged WETH (via L2 WETH Gateway) |
+| USDC (bridged) | `0x80e0e24718dbFcad49ECAA6F1e6C89A190586cA8` | ✅ Verified | Canonical **bridged** USDC (USDC.e-style), NOT native Circle USDC. `l1Address()` → mainnet USDC; matches the L2 Gateway Router derivation. 6 decimals. **Nascent** — <500 USDC total supply, single-digit holders as of 2026-07-10 |
+| USDG (Global Dollar) | `0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168` | ✅ Verified | Paxos-issued stablecoin, the chain's **dominant stable** (~9.5k holders, deepest DEX pools). Does NOT match the canonical-bridge derivation — issued independently of the bridge. 6 decimals |
+| Permit2 | `0x000000000022D473030F116dDEE9F6B43aC78BA3` | ✅ Verified | Canonical CREATE2 address, same as every EVM chain |
+
+> ⚠️ **The explorer is full of scam tokens named "USDC"** (18-decimal
+> meme deploys). The canonical bridged USDC is the one above — confirm
+> via `calculateL2TokenAddress(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48)`
+> on the L2 Gateway Router before trusting any USDC address here.
+
+## DeFi ecosystem (young — as of July 2026)
+
+Uniswap V2/V3/V4 and PancakeSwap V2/V3 factory deployments are live
+(per GeckoTerminal's `robinhood` network). Liquidity is early-stage:
+the deepest pool is USDG/WETH on Uniswap V3 (~$4.5M reserves), and most
+volume is meme tokens and tokenized-stock "Robinhood Token" ERC-20s
+paired against WETH. There are no meaningful USDC pools — quote prices
+in USDG or WETH on this chain. No dominant native DEX has emerged yet;
+treat any protocol addresses here as unproven until you verify them.
+
+Sources: <https://docs.robinhood.com/chain/protocol-contracts>,
+<https://docs.robinhood.com/chain/bridging>,
+<https://www.geckoterminal.com/robinhood/pools>